Productivity Review

Logseq

Deep Dive Analysis

Logseq is an open-source outliner that stores notes as plain Markdown files on your own disk, with bidirectional links and daily notes.

People who want linked notes without handing their data to a service.

"The strongest option if file ownership matters. Expect to solve sync yourself."

Long-running note taking and web clipping.

Simple task list.

Fast keyboard-first email client.

Public API

Offers a documented API you can build against.

Yes

Mobile app

Has a native app for iOS or Android, not just a mobile website.

Yes

Open source / self-hostable

Source is open and the tool can be run on your own infrastructure.

Yes

SSO (SAML)

Supports SAML single sign-on on at least one plan.

These are facts that can be checked, not opinions. Where we have not checked, it says so — we do not fill the gap with a guess.